docs: def play_NoteContainer(self, notecontainer):
          """Convert a mingus.containers.NoteContainer to the equivalent MIDI
          events and add it to the track_data.
  
          Note.channel and Note.velocity can be set as well.
          """
          if len(notecontainer) <= 1:
              [self.play_Note(x) for x in notecontainer]
          else:
              self.play_Note(notecontainer[0])
              self.set_deltatime(0)
              [self.play_Note(x) for x in notecontainer[1:]]